Why It’s Useful
- Backflow prevention
- One-way fluid control
- Water system regulation
- Durable plumbing components
KKL_500x500
Regular price
£3,364.00
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KKL is a flap valve designed for installation on flat walls. It is used in low-pressure channels to prevent backflow and flooding, and can be installed both above and below the water surface.
The flap is angled at 15° and mounted in a robust, maintenance-free rubber hinge with embedded fabric. The design provides low hydraulic resistance in the flow direction, while a soft seal between the valve and frame, as well as a wall seal, ensures reliable closure.
A vertical steel reinforcement is mounted on the smooth PEHD flap to prevent buildup from surface and wastewater.
KKL is made of corrosion-resistant materials, has no mechanical parts, and requires minimal maintenance.
It opens easily in the direction of flow and seals securely against backflow.
Applications: Low-pressure channels, protection against backflow and flooding.
Operation: Automatic flap in rubber hinge.
Technical specification
| Opening Pressure | 63 mm H₂O (2.5 inh2o) |
| Thickness Flange | 35 mm (1.4 in) |
| Weight | 71 kg (156.5 lb) |
| # Bolt holes (#B) | 8 |
| Dimension | 500 mm (19.7 in) |
| Height | 720 mm (28.3 in) |
| Height center opening (H2) | 360 mm (14.2 in) |
| Length closed | 340 mm (13.4 in) |
| Length Open (L2) | 710 mm (28 in) |
| Width | 800 mm (31.5 in) |
| Horizontal c-c (hcc) | 150 mm (5.9 in) |
| Vertical c-c (vcc) | 150 mm (5.9 in) |
| Ø Bolt Holes (ØB) | 16 mm (0.6 in) |
| Operating Temperature | -25° C - +40° C |
| Watertightness | DIN 19569-4 table no. 1 Class 5 |
